No Days Off
A medium Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
You're auditing login records from a retention dashboard, where each entry in `activities` carries a `user_id` and a `date` string in 'YYYY-MM-DD' form. Return the `user_id`s who were active across at least `min_streak` back-to-back calendar days.
Summary
Show up every day. Miss one and the count starts over.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision